CN115627098A - Reverse UV ink for cigarette packaging paper and printing process thereof - Google Patents

Reverse UV ink for cigarette packaging paper and printing process thereof Download PDF

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Publication number
CN115627098A
CN115627098A CN202211283689.4A CN202211283689A CN115627098A CN 115627098 A CN115627098 A CN 115627098A CN 202211283689 A CN202211283689 A CN 202211283689A CN 115627098 A CN115627098 A CN 115627098A
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Prior art keywords
oil
ink
reverse
printing
absorbing
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CN202211283689.4A
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CN115627098B (en
Inventor
刘冬
王波
朱红艳
孙鹏
陈静
方明亮
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China Tobacco Hubei Industrial LLC
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China Tobacco Hubei Industrial LLC
Wuhan Hongzhicai Packaging Printing Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/54—Inks based on two liquids, one liquid being the ink, the other liquid being a reaction solution, a fixer or a treatment solution for the ink
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/0023—Digital printing methods characterised by the inks used
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/0081—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using electromagnetic radiation or waves, e.g. ultraviolet radiation, electron beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
    • B41M7/009—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using thermal means, e.g. infrared radiation, heat
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/08—Printing inks based on natural resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/02—Printing inks
    • C09D11/10—Printing inks based on artificial resins
    • C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Electromagnetism (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to the technical field of reverse printing, in particular to reverse UV ink for cigarette packaging paper and a printing process thereof. The reverse UV ink comprises a base oil and a surface oil, and further comprises an ink absorbing oil which is printed on a printed matter before the base oil is printed on the printed matter, is printed on the printed matter in a full-page mode or is sprayed on the printed matter, and the ink absorbing oil comprises porous particles and a bonding agent. The ink absorbing oil is creatively increased in the application, the height difference between the top surface of the bottom oil layer and the top surface of the ink absorbing layer is reduced while the thickness of the bottom oil layer is ensured through the concave-convex ink absorbing layer, a printing substrate which is relatively smooth in macroscopic view is provided for the surface oil, and the possibility of the appearance of the wrinkle problem of the surface oil is reduced. Simultaneously, the part that the ink absorption layer that appears the fold problem easily is close to bottom oil reservoir edge and is the concave-convex structure in the microcosmic, for original planar structure, it has given the telescopic space of finish oil layer as the printing substrate of finish oil to further reduce finish oil layer fold.

Description

Reverse UV ink for cigarette packaging paper and printing process thereof
Technical Field
The invention relates to the technical field of reverse printing, in particular to reverse UV ink for cigarette packaging paper and a printing process thereof.
Background
The reverse sanding process is a novel printing process appearing in nearly one or two years and can be completed only by processing a plurality of times of special base oil or gloss; it is also called reverse glazing process and is regarded as a new process for local glazing.
The ink used in the reverse frosting process generally comprises reverse base oil and reverse surface oil, for example, a patent document with the publication number of CN107459865A discloses the UV reverse gloss oil ink for printing and a preparation method thereof, the UV reverse gloss oil ink comprises the reverse base oil and the reverse surface oil, and the technical scheme has the key points that the UV reverse gloss oil ink comprises the following components in parts by weight: the reverse base oil comprises the following components in parts by weight: 45-80 parts of ultraviolet curing resin A, 10-25 parts of reactive diluent A, 5-9 parts of initiator A, 2-6 parts of filler A and 3-5 parts of auxiliary agent A; the reverse face oil comprises the following components in parts by weight: 30-42 parts of ultraviolet curing resin B, 30-55 parts of reactive diluent B, 8-15 parts of photosensitive sensitizer B, 5-10 parts of photoinitiator B and 0-1 part of auxiliary agent B.
When the reverse base oil printing ink is used, a layer of reverse base oil is printed on a local area which does not need to be highlighted in a printing ink complete drying or curing mode in an offset printing connection (or offline) mode after a printing product is printed according to a normal color sequence, and the reverse face oil is coated on the surface of the whole printing product in a full-page mode after the reverse base oil is completely dried. In this way, cohesive reaction occurs in the contact area of the reverse surface oil and the reverse bottom oil to form a granular ink film to form a matte or frosted matte surface; and a high-gloss surface is formed in the reverse surface oil area without printing the reverse base oil. Finally, the surface of the print forms areas of locally high gloss and locally matte low gloss. The two completely different gloss effects realize the high contrast effect of local images, and decorate and highlight pictures and texts with gloss mirror surfaces.
It can be seen that when the reverse ink is used, only a partial area of the base ink is printed, while the surface ink is printed full-page. Because the bottom oil layer has certain thickness, the surface of a printed matter has a height difference problem after the bottom oil layer is printed; printing the surface oil on the surface easily causes the surface oil layer, especially the part of the surface oil layer positioned at the edge of the bottom oil layer to generate wrinkles, and influences the quality of the final printing product.
In order to solve the problem of the wrinkles, the conventional measures generally adopted by those skilled in the art are to reduce the thickness of the base oil or increase the fluidity of the top oil, but the reduction of the thickness of the base oil leads to poor sanding effect, while the increase of the fluidity of the top oil leads to poor adhesion of the top oil on a printed matter, so that the top oil layer is easy to fall off, and the problems are difficult to be solved well.
Disclosure of Invention
The invention aims to solve the problems and provides reverse UV ink for cigarette packaging paper and a printing process thereof.
The technical scheme for solving the problems is to firstly provide the reverse UV ink for the cigarette wrapping paper, which comprises base oil and surface oil, and also comprises ink absorption oil which is printed on a printed matter in a full-page manner or sprayed on the printed matter before the base oil is printed on the printed matter, wherein the ink absorption oil comprises porous particles and an adhesive.
The reverse ink is broken through conventional cognition that reverse ink only comprises base oil and surface oil, ink absorption oil is innovatively added, and the ink absorption oil contains particle substances, so that after the ink absorption oil is printed on a printed matter, a microcosmic uneven ink absorption layer is formed on the printed matter in a curing mode and comprises a plurality of protrusions, a groove is formed between every two adjacent protrusions, and the horizontal plane where the top point of each protrusion is located is marked as the top surface of the ink absorption layer.
When the bottom oil is locally printed on the ink absorption layer, the bottom oil flows into the groove, after the bottom oil is leveled and solidified, the distance from the top surface of the bottom oil layer to the bottom of the groove is the thickness of the bottom oil layer, and the distance from the top surface of the bottom oil layer to the top of the bulge is the thickness of the bottom oil layer projecting out of the ink absorption layer. It can be seen that through the provision of the concave-convex ink-absorbing layer, the bottom oil layer can still have a considerable thickness to ensure the subsequent sanding effect, but the difference in height between the top surface of the bottom oil layer and the top surface of the ink-absorbing layer is reduced. At the moment, the surface oil is printed in a full-page mode, one part of the surface oil is located on the top surface of the bottom oil layer, the other part of the surface oil is located on the top surface of the ink absorption layer, and the smaller height difference between the bottom oil layer and the ink absorption layer provides a printing substrate which is relatively parallel and level to the surface oil in the prior art, so that the possibility of the occurrence of the surface oil wrinkle problem at the edge of the bottom oil layer is reduced. Simultaneously, the part that the easy cockle problem that appears, the blotter layer is close to bottom oil reservoir edge is the concave-convex structure, and for original planar structure, it is as the printing substrate of finish oil, has given the telescopic space of finish oil layer to further reduce finish oil layer fold.
Wherein, in order to avoid concave-convex structure to influence the adhesion of bottom surface and face oil, improve the infiltration nature of base oil and face oil on the blotting layer, what particulate matter chooseed for use is porous granule, and it plays absorption and fixed action to base oil and face oil to guarantee the vertical infiltration efficiency and the effect of base oil and face oil.
As a preferred aspect of the present invention, the porous particles include one or more of silica, silicate, titanium dioxide, calcium carbonate, alumina, aluminum hydrate, colloidal aluminum, china clay, magnesium carbonate, calcium carbonate, barium sulfate, and zinc oxide. To reduce the color impact of the ink-receptive oil on other printing oils, transparent silica is preferred.
The shape of the porous particles is not limited, and spherical particles are preferred, so that the flake particles are avoided, and the flake particles can cause different permeation rates and permeation amounts of the base oil and the surface oil in different directions, so that the base oil and the surface oil are permeated unevenly.
The particle size of the porous particles is not limited, but the height difference between the bottom oil layer and the ink absorption layer has a large influence on the wrinkle problem of the surface oil, and the thickness difference can be further reduced and even controlled to be negative by controlling the particle size of the porous particles so as to ensure the macroscopic level of the printing substrate of the surface oil layer. Preferably, the base oil and the top oil both include a filler, and the particle size of the filler does not exceed the particle size of the porous material in the ink-absorbing oil.
The porous particles are preferably uniformly distributed in the adhesive, and are generally mixed with the adhesive and then ultrasonically agitated. When silica is selected as the porous particle, the ink-absorbing oil is preferably prepared by the following steps in view of easy agglomeration of silica: adding the adhesive into water to swell to obtain a mixed system; and mixing a silicon source and liquid carbon dioxide, adding the mixed system, and hydrolyzing to obtain silicon dioxide. Preferably, the temperature is 0-30 ℃ and the pressure is controlled to be 3.49-7.21MPa during hydrolysis; after hydrolysis, it was released to atmospheric pressure to remove carbon dioxide.
The principle is as follows: after the silicon source and the liquid carbon dioxide are mixed, the silicon source particles are dispersed and coated by the liquid carbon dioxide, then a mixing system with water is added, the solubility of the liquid carbon dioxide in water is low, the speed of water entering the liquid carbon dioxide is reduced, the speed of the water contacting the silicon source particles is reduced, the reaction rate is reduced, on one hand, the generation rate of silicon dioxide is reduced, on the other hand, the slowly generated silicon dioxide particles are coated by the liquid carbon dioxide, and therefore the silicon dioxide cannot be agglomerated.
The adhesive is another main component of the ink-absorbing oil, mainly plays a role in improving the film-forming property of the porous particles, and is used as a carrier of the porous particles to uniformly disperse the porous particles and improve the strength of the ink-absorbing layer.
Preferably, the mass ratio of the porous particles to the adhesive is 1: (30-50). The concave-convex effect of the ink absorption layer is influenced by too much consumption of the adhesive, and the adhesive force of the ink absorption layer is influenced by too little consumption of the adhesive.
Preferably, the adhesive is porous resin, and the porous particles and the porous adhesive form rich pores together to continuously fix ink and absorb ink.
In order to ensure the affinity of the adhesive and the porous particles and the affinity of the ink absorption layer and the printed matter, the bottom oil and the surface oil, the adhesive is preferably water-absorbing and oil-absorbing porous resin. As a preferable mode of the invention, the water-absorbing and oil-absorbing adhesive comprises one or more of soluble starch-butyl methacrylate copolymer, soluble starch-methyl methacrylate copolymer, soluble starch-acrylamide-butyl methacrylate copolymer and soluble starch-acrylamide-methyl methacrylate copolymer.
In addition, the base oil and the surface oil can adopt the common formula in the prior art.
Preferably, the base oil comprises a resin, a reactive monomer, a filler, an auxiliary agent and an initiator.
As a preferred aspect of the present invention, the resin comprises an ester of an acrylic modified rosin with 2-ethyl-2-hydroxymethyl-1, 3-propanediol; the active monomer comprises one or more of ethoxylated trimethylolpropane triacrylate, neopentyl glycol diacrylate and trimethylolpropane triacrylate; the filler comprises one or more of bentonite, calcium carbonate, magnesium carbonate and polyethylene wax; the initiator comprises one or more of (2, 4, 6-trimethylbenzoyl) -diphenyl phosphine oxide (TPO), polytetramethylene glycol 250 bis (2-carboxymethoxythioxanthone) ester, isooctyl p-dimethylaminobenzoate, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -1-butanone, benzophenone derivative polymers and benzophenone polymer mixtures; the auxiliary agent comprises silicon dioxide.
Preferably, the base oil comprises, by mass, 20 to 30 parts of an ester of an acrylic-modified rosin and 2-ethyl-2-hydroxymethyl-1, 3-propanediol, 5 to 10 parts of ethoxylated trimethylolpropane triacrylate, 5 to 10 parts of neopentyl glycol diacrylate, 20 to 30 parts of trimethylolpropane triacrylate, 10 to 20 parts of bentonite, 1 to 5 parts of silica, 1 to 5 parts of calcium carbonate, 1 to 5 parts of magnesium carbonate, 1 to 5 parts of polyethylene wax, 1 to 5 parts of (2, 4, 6-trimethylbenzoyl) -diphenylphosphine oxide (TPO), 1 to 5 parts of polytetramethylene glycol 250 bis (2-carboxymethoxythioxanthone) ester, 1 to 5 parts of isooctyl terephthalate, 1 to 5 parts of 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -1-butanone, 1 to 5 parts of a polymer of a benzophenone derivative, and 1 to 5 parts of a benzophenone polymer.
Preferably, the surface oil comprises a film forming material, an initiator, a filler and a leveling agent.
Preferably, the film forming material comprises one or more of 1, 6-hexanediol diacrylate, tripropylene glycol diacrylate, trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, acrylate copolymers and epoxy resin; the initiator comprises one or more of (2, 4, 6-trimethylbenzoyl) diphenyl phosphine oxide (TPO), 2-benzyl-2-dimethylamino-1- (4-morpholinyl phenyl) -1-butanone, 1- [4- (2-hydroxyethoxy) phenyl ] -2-hydroxy-2-methyl-1-acetone and benzophenone derivative polymers; the filler comprises one or more of microcrystalline wax, polyethylene and polyethylene wax; the leveling agent comprises polydimethylsiloxane.
Preferably, the top oil comprises, in parts by mass, 1 to 5 parts of 1, 6-hexanediol diacrylate, 20 to 25 parts of tripropylene glycol diacrylate, 30 to 35 parts of trimethylolpropane triacrylate, 5 to 10 parts of ethoxylated trimethylolpropane triacrylate, 8 to 12 parts of an acrylate copolymer, 20 to 25 parts of an epoxy resin, 0.3 to 0.5 part of (2, 4, 6-trimethylbenzoyl) diphenylphosphine oxide (TPO), 0.3 to 0.5 part of 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -1-butanone, 0.3 to 0.5 part of 1- [4- (2-hydroxyethoxy) phenyl ] -2-hydroxy-2-methyl-1-propanone, 3 to 3.5 parts of a polymer of a benzophenone derivative, 0.5 to 1 part of a microcrystalline wax, 8 to 12 parts of polyethylene or/and polyethylene wax, and 0.5 to 1.5 parts of polydimethylsiloxane.
The invention also aims to provide a printing process of the reverse UV ink for the cigarette packaging paper, which comprises the following steps:
s1, printing or spraying ink absorbing oil on a printed matter in a full-page mode;
s2, locally printing base oil on the printed matter after curing;
and S3, printing surface oil on the printed matter in a full-page manner after curing.
The invention has the beneficial effects that:
1. the ink absorbing oil is creatively increased in the application, the height difference between the top surface of the bottom oil layer and the top surface of the ink absorbing layer is reduced while the thickness of the bottom oil layer is ensured through the concave-convex ink absorbing layer, a printing substrate which is relatively smooth in macroscopic view is provided for the surface oil, and the possibility of the appearance of the wrinkle problem of the surface oil is reduced. Simultaneously, the part that the easy wrinkle problem that appears, the blotting layer is close to bottom oil layer edge is concave-convex structure on the microcosmic, for original planar structure, it is as the printing substrate of finish oil, has given the telescopic space of finish oil layer to further reduce finish oil layer wrinkle.
2. The application provides reverse ink formula, after coating the finish on the base oil of solidification, the cohesion repulsion reaction can take place in the region of finish and base oil contact, and even shrink accumulation scene takes place for the high face oil of mobility under the repulsion force effect for light scattering, and form the ink film of little graininess, realize the printing effect of mute light or dull polish matte face.
Detailed Description
The following are specific embodiments of the present invention and further illustrate the technical aspects of the present invention, but the present invention is not limited to these examples.
Example 1
A reverse UV ink for cigarette packing paper comprises ink absorbing oil, base oil and surface oil.
The ink absorbing oil comprises 1 part of silicon dioxide and 40 parts of soluble starch-acrylamide-methyl methacrylate copolymer and is prepared by the following steps: adding 10 parts of starch into water according to the parts by mass, and stirring and pasting at 65 ℃ to obtain the gelatinized starch. Mixing the cooled gelatinized starch with 0.5 part of initiator ammonium persulfate, 5 parts of acrylic acid, 10 parts of acrylamide and 0.05 part of cross-linking agent N, N' -methylene-bisacrylamide, stirring for 4 hours at 50 ℃, then adding 40 parts of methyl methacrylate, and carrying out grafting reaction for 4 hours at 70 ℃. After the reaction, adding sodium hydroxide to neutralize until the PH value is 6-8, carrying out vacuum filtration and vacuum drying to obtain the soluble starch-acrylamide-methyl methacrylate copolymer. Adding the soluble starch-acrylamide-methyl methacrylate copolymer into water for swelling, adding silicon dioxide particles with the particle size of 5 mu m, and performing ultrasonic dispersion for 10min to obtain the ink absorbing oil.
The base oil comprises 25 parts of an ester of an acrylic-modified rosin with 2-ethyl-2-hydroxymethyl-1, 3-propanediol, 8 parts of ethoxylated trimethylolpropane triacrylate, 7 parts of neopentyl glycol diacrylate, 25 parts of trimethylolpropane triacrylate, 15 parts of bentonite, 2 parts of silica, 2 parts of calcium carbonate, 2 parts of magnesium carbonate, 2 parts of polyethylene wax, 2 parts of (2, 4, 6-trimethylbenzoyl) -diphenylphosphine oxide (TPO), 2 parts of polytetramethylene glycol 250 bis (2-carboxymethoxythioxanthone) ester, 2 parts of isooctyl p-dimethylaminobenzoate, 2 parts of 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -1-butanone, 2 parts of a polymer of a benzophenone derivative, 2 parts of a benzophenone polymer, and is prepared by the following steps: the components are mixed and stirred uniformly, and then ground until the fineness is not more than 3 mu m, so that light yellow slurry fluid is obtained.
The face oil comprises 2 parts of 1, 6-hexanediol diacrylate, 23 parts of tripropylene glycol diacrylate, 32 parts of trimethylolpropane triacrylate, 8 parts of ethoxylated trimethylolpropane triacrylate, 10 parts of an acrylate copolymer, 22 parts of an epoxy resin, 0.4 parts of (2, 4, 6-trimethylbenzoyl) diphenylphosphine oxide (TPO), 0.4 parts of 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -1-butanone, 0.4 parts of 1- [4- (2-hydroxyethoxy) phenyl ] -2-hydroxy-2-methyl-1-propanone, 3.3 parts of a polymer of benzophenone derivatives, 0.8 parts of microcrystalline wax, 10 parts of polyethylene wax, 1 part of polydimethylsiloxane, and is prepared by the following steps: mixing the above components, stirring, and grinding to fineness of no more than 3 μm to obtain light yellow liquid.
The printing process of the reverse UV ink for the cigarette wrapping paper comprises the following steps:
s1, printing or spraying ink absorbing oil on a printed matter in a full-page mode, and then drying and curing at 60 ℃;
s2, after curing, partially printing base oil on the printed matter, and curing by ultraviolet irradiation;
s3, after curing, printing surface oil on the printed matter in a full-page manner, and curing by ultraviolet irradiation.
Example 2
This embodiment is substantially the same as embodiment 1, except that: the ink-absorbing oil comprises 1 part of silicon dioxide and 40 parts of sodium polyacrylate resin.
Is prepared by the following steps: according to the mass parts, after acrylic acid is neutralized, adding a crosslinking agent N, N' -methylene bisacrylamide, an initiator potassium persulfate and a pore-forming agent isopropanol, uniformly stirring to obtain a solution, heating the solution to 65 ℃ for polymerization reaction, and after the reaction is finished, carrying out vacuum filtration and vacuum drying to obtain the sodium polyacrylate resin. Adding the sodium polyacrylate resin into water for swelling, adding silica particles with the particle size of 5 mu m, and performing ultrasonic dispersion for 10min to obtain the ink-absorbing oil.
Example 3
This embodiment is substantially the same as embodiment 1, except that: the ink absorbing oil comprises 1 part of titanium dioxide and 40 parts of soluble starch-acrylamide-methyl methacrylate copolymer.
Example 4
This embodiment is substantially the same as embodiment 1, except that:
when the ink-absorbing oil is prepared: firstly, adding soluble starch-acrylamide-methyl methacrylate copolymer into water for swelling to obtain a mixed system. The reactor was then filled with tetraethyl orthosilicate and placed in a bath of water at constant temperature of 20 ℃. And opening an exhaust port of the reactor, simultaneously injecting carbon dioxide into the reactor until the air in the reactor is completely exhausted, then closing the exhaust port of the reactor, and continuously injecting the carbon dioxide into the reactor until the pressure reaches 6MPa. Then, the mixed system was introduced into the reaction vessel and kept under these conditions for 15 hours. Finally, releasing the reactor to normal pressure, volatilizing one part of carbon dioxide and forming the other part of carbon dioxide into dry ice; the reactor was then heated at ambient temperature and pressure to sublime the dry ice. And taking out the residual product in the reactor, namely the ink absorbing oil.
Example 5
This embodiment is substantially the same as embodiment 1, except that: silica particles with a particle size of 300nm are selected.
Example 6
This embodiment is substantially the same as embodiment 1, except that: the ink-absorbing oil comprises 1 part of silicon dioxide and 30 parts of soluble starch-acrylamide-methyl methacrylate copolymer.
Example 7
This embodiment is substantially the same as embodiment 1, except that: the ink-absorbing oil comprises 1 part of silicon dioxide and 50 parts of soluble starch-acrylamide-methyl methacrylate copolymer.
Example 8
This embodiment is substantially the same as embodiment 1, except that: the ink-absorbing oil comprises 1 part of silicon dioxide and 10 parts of soluble starch-acrylamide-methyl methacrylate copolymer.
Example 9
This embodiment is substantially the same as embodiment 1, except that: the ink-absorbing oil comprises 1 part of silicon dioxide and 100 parts of soluble starch-acrylamide-methyl methacrylate copolymer.
Comparative example 1
This comparative example is essentially the same as example 1 except that: the ink absorbing oil comprises 41 parts of soluble starch-acrylamide-methyl methacrylate copolymer.
Comparative example 2
This comparative example is essentially the same as example 1, except that: ink-absorbing oil is not used.
[ quality detection of printed products ]
And (3) wrinkle detection: the coatings on the surfaces of the printed products of the examples and comparative examples were measured orange peel using a BYK laser orange peel tester (Garden-4806) which was moved 10cm across the surface of the print in use and the light source was directed at 60 ℃ onto the print. The results are shown in Table 1 below.
And (3) adhesive force detection: and (3) tightly adhering a 3M800 test adhesive tape on a printed matter, covering the whole test area, waiting for 5min, holding one end of the adhesive tape by hand, tearing off the adhesive tape in a direction forming an angle of 45 degrees with the printing surface, and calculating the proportion of the area of the ink falling area in the whole test area.
Table 1.
Figure DEST_PATH_IMAGE002
In orange peel detection, the grade number is an evaluation index, and the larger the numerical value is, the smaller the orange peel is, and the better the surface state is. As shown in table 1, in this example, the number of stages of comparative example 2, comparative example 1 and example 1 is increased in sequence, which shows that the porous structure can effectively reduce the orange peel, i.e. the wrinkle phenomenon, of the coating.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments, or alternatives may be employed, by those skilled in the art, without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims (10)

1. The reverse UV printing ink for the cigarette packaging paper comprises base oil and surface oil, and is characterized in that: the ink-absorbing printing ink also comprises ink-absorbing oil which is printed on the printed matter in a full-page printing or spraying way before the printing base oil is printed on the printed matter, wherein the ink-absorbing oil comprises porous particles and an adhesive.
2. The reverse UV ink for cigarette wrapping paper according to claim 1, wherein: the porous particles comprise one or more of silica, silicate, titanium dioxide, calcium carbonate, alumina, aluminum hydrate, colloidal aluminum, china clay, magnesium carbonate, calcium carbonate, barium sulfate and zinc oxide.
3. The reverse UV ink for cigarette wrapping paper according to claim 2, wherein: the porous particles are silicon dioxide.
4. The reverse UV ink for cigarette wrapping paper according to claim 3, wherein: the ink absorbing oil is prepared by the following steps: adding the adhesive into water to swell to obtain a mixed system; and mixing a silicon source and liquid carbon dioxide, adding the mixed system, and hydrolyzing to obtain silicon dioxide.
5. The reverse UV ink for cigarette wrapping paper according to claim 4, wherein: during hydrolysis, the temperature is 0-30 ℃, and the pressure is controlled to be 3.49-7.21MPa; after hydrolysis, the mixture was released to atmospheric pressure to remove carbon dioxide.
6. The reverse UV ink for cigarette wrapping paper according to claim 1, wherein: the adhesive is water-absorbing and oil-absorbing porous resin.
7. The reverse UV ink for cigarette wrapping paper according to claim 6, wherein: the adhesive comprises one or more of soluble starch-butyl methacrylate copolymer, soluble starch-methyl methacrylate copolymer, soluble starch-acrylamide-butyl methacrylate copolymer and soluble starch-acrylamide-methyl methacrylate copolymer.
8. The reverse UV ink for cigarette wrapping paper according to claim 1, wherein: the mass ratio of the porous particles to the adhesive is 1: (30-50).
9. The reverse UV ink for cigarette wrapping paper according to claim 1, wherein: the base oil and the surface oil both comprise fillers, and the particle size of the fillers does not exceed the particle size of the porous material in the ink absorbing oil.
10. A process for printing a reverse UV ink for cigarette wrapper paper according to any one of claims 1 to 9, wherein: the method comprises the following steps:
s1, printing or spraying ink absorbing oil on a printed matter in a full-page mode;
s2, locally printing base oil on the printed matter after curing;
and S3, printing surface oil on the printed matter in a full-page manner after curing.
CN202211283689.4A 2022-10-20 2022-10-20 Reverse UV (ultraviolet) ink for cigarette packaging paper and printing process thereof Active CN115627098B (en)

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Publication number Priority date Publication date Assignee Title
CN101579974A (en) * 2009-06-23 2009-11-18 中国乐凯胶片集团公司 Waterproof glossy ink-jet recording medium
JP2011011518A (en) * 2009-07-06 2011-01-20 Fujifilm Corp Inkjet recording medium
CN102143846A (en) * 2008-09-04 2011-08-03 东洋制罐株式会社 Seamless can, printing plate, cylindrical printer for seamless can, printing method for seamless can, and method for producing seamless can
CN107459865A (en) * 2017-08-09 2017-12-12 中山市博海精细化工有限公司 One kind printing reverse gloss oil ink of UV and preparation method thereof
CN108046278A (en) * 2018-01-23 2018-05-18 合肥星巢环保科技有限公司 A kind of method that tubular type continuous flow method prepares high specific surface area silica
CN114874692A (en) * 2022-04-29 2022-08-09 北京金印联国际供应链管理有限公司 UV reverse base oil and preparation method and application thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102143846A (en) * 2008-09-04 2011-08-03 东洋制罐株式会社 Seamless can, printing plate, cylindrical printer for seamless can, printing method for seamless can, and method for producing seamless can
CN101579974A (en) * 2009-06-23 2009-11-18 中国乐凯胶片集团公司 Waterproof glossy ink-jet recording medium
JP2011011518A (en) * 2009-07-06 2011-01-20 Fujifilm Corp Inkjet recording medium
CN107459865A (en) * 2017-08-09 2017-12-12 中山市博海精细化工有限公司 One kind printing reverse gloss oil ink of UV and preparation method thereof
CN108046278A (en) * 2018-01-23 2018-05-18 合肥星巢环保科技有限公司 A kind of method that tubular type continuous flow method prepares high specific surface area silica
CN114874692A (en) * 2022-04-29 2022-08-09 北京金印联国际供应链管理有限公司 UV reverse base oil and preparation method and application thereof

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